This FAQ article is to introduce the range of Chuck inserts or adapters available from NOVA. 

Insert adapters are used for NOVA G3 insert type, SuperNOVA 2 insert type and Titan (not Titan II) chucks. The benefits of using insert type of chucks is that 

it can be attached onto many different brands of lathes other than NOVA lathes by only changing the type of inserts and not the whole chuck.

You can learn more at

Or click on the attachments.


To ensure the insert fitting correctly onto your lathe spindle, the thread standard described on the NOVA insert will have to match your lathe spindle thread exactly. 

E.g. If your lathe spindle thread is: 1 1/8" x 8TPI UN  

      The suitable NOVA insert will have to be I7NS which has the exact 1 1/8" x 8TPI UN  machined on it. 

There are 2 documents attached on this article. The first document contains the list of the NOVA insert specifications and the second containing the table of thread 

sizes on different standards.

If you are unsure of your lathe spindle thread, there are a number of steps you can take, including checking with your lathe manufacturer, looking in your lathe manual etc.  We also have a step by step process for checking the thread, if your lathe is not a commonly sold brand.